Java tutorial
//package com.java2s; import android.annotation.SuppressLint; import android.app.Activity; import android.hardware.Camera; import android.view.Surface; public class Main { /** * set the camera display orientation based on the activity's rotation * * @param activity * @param cameraId * @param camera */ @SuppressLint("NewApi") public static void setCameraDisplayOrientation(Activity activity, int cameraId, android.hardware.Camera camera) { final int rotation = activity.getWindowManager().getDefaultDisplay().getRotation(); final int rotDeg = getCameraRotationForSurfaceRotation(rotation, camera, cameraId); if (rotDeg != 0) { camera.setDisplayOrientation(rotDeg); } } /** * gets the correct rotation of the camera for the surface rotation * requested, adjust for front/back camera * * @param surfaceRotation * @param camera * @param cameraID * @return */ @SuppressLint("NewApi") public static int getCameraRotationForSurfaceRotation(int surfaceRotation, Camera camera, int cameraID) { android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo(); android.hardware.Camera.getCameraInfo(cameraID, info); int degrees = 0; switch (surfaceRotation) { case Surface.ROTATION_0: degrees = 0; break; case Surface.ROTATION_90: degrees = 90; break; case Surface.ROTATION_180: degrees = 180; break; case Surface.ROTATION_270: degrees = 270; break; } int result; if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) { result = (info.orientation + degrees) % 360; result = (360 - result) % 360; // compensate the mirror } else { // back-facing result = (info.orientation - degrees + 360) % 360; } return result; } }